<template>
  <div :class="className" :style="{height:height,width:width}" />
</template>

<script>
import echarts from 'echarts'
require('echarts/theme/macarons') // echarts theme
import resize from './mixins/resize'

const animationDuration = 6000

export default {
  mixins: [resize],
  props: {
    data: {
      type: Object,
      default: {}
    },
    className: {
      type: String,
      default: 'chart'
    },
    width: {
      type: String,
      default: '100%'
    },
    height: {
      type: String,
      default: '300px'
    }
  },
  data() {
    return {
      chart: null
    }
  },
  mounted() {
    this.$nextTick(() => {
      this.initChart()
    })
  },
  beforeDestroy() {
    if (!this.chart) {
      return
    }
    this.chart.dispose()
    this.chart = null
  },
  methods: {
    initChart() {
      this.chart = echarts.init(this.$el, 'macarons')

      this.chart.setOption({
        tooltip: {
          title: {
            text: '新增会员', //标题
          },
          trigger: 'axis',
          axisPointer: { // 坐标轴指示器，坐标轴触发有效
            type: 'shadow' // 默认为直线，可选为：'line' | 'shadow'
          }
        },
        legend: {   //图例
          top: 0,
          icon: 'rect',
          itemWidth: 14,
          itemHeight: 10,
          itemGap: 13,
          // data: this.lineData.yData, //导航数据
          right: '50%',
          textStyle: {
            fontSize: 12,
            color: '#000000'
          }
        },
        grid: {
          top: 50,
          left: '2%',
          right: '2%',
          bottom: '3%',
          containLabel: true
        },
        xAxis: [{
          type: 'category',
          data: ['今日新增', '昨日新增', '本月新增'],
          axisTick: {
            alignWithLabel: true
          }
        }],
        yAxis: [{
          type: 'value',
          axisTick: {
            show: false
          }
        }],
        series: [{
          name: '人数',
          type: 'bar',
          stack: 'vistors',
          barWidth: '20%',
          data: [this.data.user_today, this.data.user_yesterday,this.data.user_month],
          animationDuration
        }, ]
      })
    }
  },
  watch: {
    data: {
      deep: true,
      handler(val) {
        // console.log('折线图监听', val)
        if (val) {
          setTimeout(this.initChart(), 100);
        }
      }
    },
  }
}
</script>
